Definition
Sales is the plural of SALE and carries two related but distinct legal senses depending on context.
1. Transactions. The completed or contemplated transfers of property — real, personal, or mixed — from a seller to a buyer for consideration, typically money. In this sense, "sales" refers to individual transfer events governed by contract principles and, for goods, by the Uniform Commercial Code or its predecessors.
2. Commercial activity. The broader body of law and commercial practice governing the negotiation, formation, performance, and breach of contracts for the transfer of goods or services. In this sense, "the law of sales" describes a distinct field, historically rooted in the common law of contract and merchant custom, later codified first in the Uniform Sales Act (1906) and then in UCC Article 2.
3. Proceeds and volume. In tax, accounting, and regulatory contexts, "sales" means the aggregate revenue or value generated by selling activity — as in "gross sales," "net sales," or "total sales" figures reported on financial statements or tax returns.
Common Language
Modern common usage (Wiktionary): The activities involved in selling goods or services; the amount or value of goods and services sold.
Historical common usage (Webster's 1913): The transfer of property from one person to another for a valuable consideration; also, the aggregate of things sold in a given period.
The common meaning and the legal meaning overlap substantially, but legal usage is more precise in two respects. First, law distinguishes a completed sale (title transferred, consideration exchanged) from a mere agreement to sell (an executory contract), a distinction that carries significant consequences for risk of loss, creditor rights, and breach remedies. Second, when lawyers speak of "sales" as a field of law, they invoke a specific doctrinal framework — offer, acceptance, warranty, title passage, and remedies — that the ordinary usage of the word does not capture.
Common Confusion
Sales vs. Contracts generally. All sales are contracts, but not all contracts are sales. The law of sales applies specifically to transactions involving the transfer of property for consideration. Service contracts, leases, and gratuitous transfers fall outside the traditional sales framework, though UCC Article 2 has generated persistent litigation over mixed goods-and-services transactions. Historical sources sometimes use "contract" and "sale" interchangeably in discussing executory agreements, which can mislead researchers into thinking no distinction exists.
Sales vs. Gifts. A sale requires consideration; a gift does not. The two are frequently distinguished in cases involving estate and gift taxation, fraudulent transfer analysis, and the bona fide purchaser doctrine.
Why It Matters in Research
Researchers using pre-UCC sources must track a significant doctrinal shift. Before the Uniform Sales Act and later the UCC, the law of sales was entirely common law, with heavy influence from English merchant custom and the Sale of Goods Act 1893. Rules on title passage, risk of loss, and seller's remedies varied considerably by jurisdiction and were often embedded in general contract treatises rather than standalone sales authorities. Bouvier's and other 19th-century dictionaries reflect this common law baseline.
The damages rule recorded in Bouvier's — the difference between contract price and market value at the time and place of delivery — remains the foundational expectation damages measure, now codified in UCC § 2-713 for buyer's remedies and § 2-708 for seller's remedies. Researchers tracing the lineage of specific damages rules will find that the pre-UCC cases cited in historical dictionaries are often still persuasive authority because the UCC largely codified existing common law on this point rather than overturning it.
For tax research, "sales" is a term of art in installment sale rules, wash sale disallowance, and sales-tax nexus analysis. Each of these sub-bodies of law applies its own definition of when a "sale" has occurred, which may not align with contract law's definition of the same event. A transaction treated as a completed sale for UCC purposes may be recharacterized as a lease or financing arrangement for tax purposes.
For real estate research, "sales" intersects with redemption rights, foreclosure procedure, and transfer tax statutes — all of which impose their own operative definitions of when a sale is complete and what its consequences are. The pre-sale and post-sale distinction in redemption law, for example, depends on a precise legal moment of sale that statutory schemes define differently than the parties' contract might suggest.
Jurisdictional variation in sales tax treatment — what counts as a taxable "sale," what is excluded, and where the transaction is deemed to occur — is a distinct research problem that requires consulting each state's revenue code and administrative guidance independently.
Historical Dictionary Support
Bouvier's treatment of sales is characteristic of 19th-century legal dictionaries: it addresses the term primarily through its remedial consequences — what happens when performance fails — rather than through systematic doctrinal architecture. The damages rule Bouvier's records (contract price minus market value at delivery) was well-settled across jurisdictions by the mid-1800s, as evidenced by the breadth of citations spanning New York, Michigan, Texas, Illinois, Maine, Mississippi, Pennsylvania, Vermont, and federal circuit authorities. This cross-jurisdictional consensus is notable and suggests that on core damages questions, researchers can treat pre-UCC common law sources as broadly reliable regardless of jurisdiction.
What historical dictionaries miss: Bouvier's and contemporaries give little attention to warranty law, title passage rules, or the seller's ability to recover the full contract price (action for the price), all of which became central concerns of 20th-century sales law. Researchers should not assume that a pre-UCC dictionary's silence on these issues means the law was unsettled — it often means the dictionary's scope was narrower than the field.
Jurisdictional Note
All U.S. jurisdictions except Louisiana have adopted UCC Article 2 as the primary source of sales law for goods transactions, though with non-uniform amendments. Louisiana's civil law tradition produces different rules on title passage and risk of loss. International transactions may be governed by the UN Convention on Contracts for the International Sale of Goods (CISG), which displaces UCC Article 2 unless excluded by the parties.
Encyclopedia Cross-Reference
Installment Sales (Law Mind Tax Encyclopedia)
Wash Sale Rules (Law Mind Tax Encyclopedia)
Statutory and Equitable Rights of Redemption — Pre-Sale and Post-Sale Redemption Periods (Law Mind Real Estate Transactions & Construction Encyclopedia)